Phone Stack

Powerful Features for Customer Contact Teams

Everything you need to launch, manage, and optimize AI-powered customer outreach — by call and email.

AI Training Chat

Train your AI agent by having a conversation, not filling out forms. Describe your customer workflows, support processes, and outreach goals — Phone Stack learns your communication style and adapts.

  • Natural conversation-based training
  • Learns your service workflows and talking points
  • Refine and iterate with follow-up chats

Document Intelligence

Upload knowledge bases, policy docs, billing FAQs, and product documentation. Phone Stack extracts key information and uses it during calls to answer customer questions accurately.

  • PDF, DOCX, and TXT support
  • Automatic extraction of policies, pricing, and procedures
  • AI references your docs in real-time during calls

Voice Selection

Choose from multiple natural-sounding voice options. Each voice has been fine-tuned for customer conversations — professional, warm, and engaging.

  • Multiple male and female voices
  • Adjustable speaking speed and tone
  • Custom voice cloning on Enterprise plans

Bot Detection Handling

Configurable behavior when asked "Are you a robot?" Phone Stack can disclose, deflect, or handle the question according to your preferences and compliance requirements.

  • Customizable disclosure scripts
  • Natural deflection responses
  • Compliance-first configuration

Smart Number Management

Calls originate from local area codes matching your customers' locations. Numbers are automatically warmed and rotated to maintain reputation and maximize answer rates.

  • Automatic local area code matching
  • Number warming and reputation monitoring
  • Intelligent rotation to avoid spam flags

Campaign Builder

Build and manage multiple call and email campaigns with different AI profiles, customer lists, phone numbers, and schedules. Run concurrent campaigns targeting different segments.

  • Multi-campaign management with call and email channels
  • Schedule by day, time, and timezone
  • Concurrency controls to pace your outreach

Live Dashboard

Watch your campaigns in real time. See active calls, streaming transcripts, and live metrics as your AI contacts customers. Jump in to monitor any conversation.

  • Real-time call status and metrics
  • Live streaming transcripts
  • Active campaign monitoring

Call Recording & Transcription

Every call is automatically recorded and transcribed. Search through transcripts, replay calls, and review exactly what was said.

  • Full HD audio recording
  • Accurate AI transcription
  • Searchable transcript archive

AI Call Summaries

Get auto-generated summaries for every call — key topics discussed, customer sentiment, issues raised, and resolution status with follow-up actions.

  • Automated call disposition
  • Sentiment analysis
  • Resolution tracking and follow-up actions

Customer Q&A Handling

Define custom responses to common customer questions and concerns. Train the AI with your best answers and watch it handle inquiries naturally.

  • Custom question-response pairs
  • Context-aware response selection
  • Continuous improvement from call data

Appointment & Meeting Booking

AI books service appointments and meetings directly to your calendar during the call. Supports Calendly integration or AI-suggested time slots. Automatic confirmations sent to customers.

  • Calendly and Google Calendar integration
  • AI-suggested available time slots
  • Automatic confirmation emails

Compliance Tools

Built-in compliance workflows to keep you covered. Consent management, AI disclosure, automatic opt-out handling, and a full audit trail.

  • Consent tracking and management
  • AI disclosure configuration
  • Automatic opt-out list and audit trail

Analytics & Reporting

Track answer rates, resolution rates, cost per contact, and campaign performance. Identify what's working and optimize your outreach strategy with data.

  • Answer rate and connection tracking
  • Resolution and outcome visualization
  • Cost per contact and campaign performance metrics

Email Campaigns

Send personalized email outreach alongside calls. AI drafts context-aware messages, tracks opens and replies, and escalates when needed.

  • AI-drafted email templates
  • Open, click, and reply tracking
  • Automatic escalation on replies

Multi-Channel Sequencing

Build sequences that combine calls and emails. If a customer doesn't answer, follow up by email. If they don't reply, call again. AI manages the cadence automatically.

  • Configurable channel priority
  • Automatic escalation between channels
  • Per-customer channel preference tracking